Underwater acoustic systems

著者

• Coates, R. F. W. (Rodney F. W.)

書誌事項

Underwater acoustic systems

Rodney F.W. Coates

（Macmillan new electronics series）

Macmillan Education, 1990

• : pbk

内容説明・目次

巻冊次

ISBN 9780333425411

内容説明

Part of a series which is aimed primarily at a professional engineering or postgraduate student audience, this book concerns the basics of the propagation of sound in the sea and with the preliminary assessment via the "Sonar Equations" of systems performance. It includes the complexities of Normal Mode modelling of sound propagation, noise and reverberation, the subject of acoustic transduction and underwater acoustic equipment. Underwater acoustic communication which is assuming importance in scientific data gathering, communication with autonomous vehicles and sub-sea oil-field control and telemetry is treated in detail.

目次

• Part 1 Sound transmission fundamentals: sound speed
• the propagation equation, logarithmic power measurement, the "new" reference unit
• sound reflection and refraction
• pressure reflection and transmission coefficients
• behaviour at normal incidence
• reflection and transmission with varying incidence
• reflection and transmission - the "fast" bottom and the "slow" bottom. Part 2 The Solar Equations: source intensity calculation
• source directivity
• transmission loss
• target strength
• reflection intensity loss coefficient
• sea floor loss
• sea surface loss
• noise
• reverberation
• calculating the signal excess. Part 3 Characteristics and analysis of sonar waveforms: swept frequency spectrum analyzers
• filter bank spectrum analyzers
• fast Fourier transform analyzers
• prony analysis
• further model-building techniques for spectral estimation
• four dimensional space-time waveform analysis. Part 4 Ray trace modelling of sonar propagation: ray tracing sonar models
• ray trace calculations
• some examples of ray modelling
• modelling transmission in the shelf-seas
• the Lloyd mirror effect. Part 5 Normal mode modelling of sonar propagation: a Heuristic treatment of normal modes in an acoustic waveguide
• normal mode solution for long ranges
• normal modes as interfering plane waves
• the normal mode solution formalized
• normal mode solution for all ranges
• the horizontally stratified channel. Part 6 Noise and reverberation: deep sea ambient noise level
• the variability of ambient noise level with time and depth
• the angular distribution of the ambient noise field
• ship-generated noise
• reverberation
• scattering. Part 7 Acoustic transduction: the basic principles of acoustic transduction
• Piezo-electric transduction
• the Langevin projector
• ring and tube transducer designs
• resonance behaviour of transducers
• multiple matching layer transducers
• polar response measurements on transducers
• admittance measurements on terminal response
• hydrophones. Part 8 Transducer arrays: the linear hydrophone array
• the Fourier transform approach to pattern synthesis
• array beamsteering
• directivity index
• the parametric sonar
• synthetic aperture sonar. Part 9 Sonar engineering and applications: the basic echo sounder
• sub-bottom profiling
• fishing sonars
• side-scan terrain-mapping sonars
• seismic survey
• acoustic positioning and navigation
• Doppler measurements. Part 10 Acoustic communications: the gross attributes of the received signal
• the channel transfer function
• combatting multipath
• diversity reception
• equalization
• communication using parametric transmission.

巻冊次

: pbk ISBN 9780333425428

内容説明

Part of a series which is aimed primarily at a professional engineering or postgraduate student audience, this book concerns the basics of the propagation of sound in the sea and with the preliminary assessment via the "Sonar Equations" of systems performance. It includes the complexities of Normal Mode modelling of sound propagation, noise and reverberation, the subject of acoustic transduction and underwater acoustic equipment. Underwater acoustic communication which is assuming importance in scientific data gathering, communication with autonomous vehicles and sub-sea oil-field control and telemetry is treated in detail.

目次

• Part 1 Sound transmission fundamentals: sound speed
• the propagation equation, logarithmic power measurement, the "new" reference unit
• sound reflection and refraction
• pressure reflection and transmission coefficients
• behaviour at normal incidence
• reflection and transmission with varying incidence
• reflection and transmission - the "fast" bottom and the "slow" bottom. Part 2 The Solar Equations: source intensity calculation
• source directivity
• transmission loss
• target strength
• reflection intensity loss coefficient
• sea floor loss
• sea surface loss
• noise
• reverberation
• calculating the signal excess. Part 3 Characteristics and analysis of sonar waveforms: swept frequency spectrum analyzers
• filter bank spectrum analyzers
• fast Fourier transform analyzers
• prony analysis
• further model-building techniques for spectral estimation
• four dimensional space-time waveform analysis. Part 4 Ray trace modelling of sonar propagation: ray tracing sonar models
• ray trace calculations
• some examples of ray modelling
• modelling transmission in the shelf-seas
• the Lloyd mirror effect. Part 5 Normal mode modelling of sonar propagation: a Heuristic treatment of normal modes in an acoustic waveguide
• normal mode solution for long ranges
• normal modes as interfering plane waves
• the normal mode solution formalized
• normal mode solution for all ranges
• the horizontally stratified channel. Part 6 Noise and reverberation: deep sea ambient noise level
• the variability of ambient noise level with time and depth
• the angular distrubution of the ambient noise field
• ship-generated noise
• reverberation
• scattering. Part 7 Acoustic transduction: the basic principles of acoustic transduction
• Piezo-electric transduction
• the Langevin projector
• ring and tube transducer designs
• resonance behaviour of transducers
• multiple matching layer transducers
• polar response measurements on transducers
• admittance measurements on terminal response
• hydrophones. Part 8 Transducer arrays: the linear hydrophone array
• the Fourier transform approach to pattern synthesis
• array beamsteering
• directivity index
• the parametric sonar
• synthetic aperture sonar. Part 9 Sonar engineering and applications: the basic echo sounder
• sub-bottom profiling
• fishing sonars
• side-scan terrain-mapping sonars
• Seismic survey
• acoustic positioning and navigation
• Doppler measurements. Part 10 Acoustic communications: the gross attributes of the received signal
• the channel transfer function
• combatting multipath
• diversity reception
• equalization
• communication using parametric transmission.

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詳細情報

• NII書誌ID(NCID): BA10165168
• ISBN:
  • 0333425413
  • 0333425421
• 出版国コード: uk
• タイトル言語コード: eng
• 本文言語コード: eng
• 出版地: Basingstoke
• ページ数/冊数: x, 188 p.
• 大きさ: 24 cm
• 分類:
  • LCC : QC242.2
  • DC20 : 620.25
• 件名:
  • PRECIS : Underwater acoustics
  • LCSH : Underwater acoustics
• 親書誌ID:
  • BA10165204